text: The evaluated parameters are:
  * time to specimen failure (e.g., breakage, or from other "failure" criteria)
  * ductility (by elongation  to fracture or the reduction of the area)
  * ultimate tensile strength (from the maximum load)
  * area under the elongation - load curve (which represents the fracture energy)
  * percent of ductile/brittle fracture on the fracture surface
  * threshold stress for cracking
  The results of the SSRT tests are evaluated using the ratio:
  The departure of the ratio below unity quantifies the increased susceptibility to cracking.
  The test is best used in combination with electrochemical measurements and other stress corrosion cracking tests.